The
non-specific defenses or
innate defenses are designed to protect the body against different types of
pathogens, but not specific
pathogens. The
non-specific defenses make up the first and second lines of defense in the body.
Surface barriers: First line of defense
The
mucosa and the
epidermis together line anywhere in our body that is exposed to the external environment. By providing a continuous barrier that separates our internal environment from the outside world, surface barries can prevent
pathogens from easily spreading into body
tissues.
The surface barriers have several defenses that protect the
deeper tissues in the body:
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1 - Anatomy and Physiology Basics